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cleaning metal building roof and exterior walls?

Jim Durda

New member
What would be the best mix for doing a metal building roof and exterior walls?Do I use a house wash and rinse really well?Do I need to apply a wax? the building is at the local fairgrounds and is 70x80
thx for any help
 

Richard Velazquez

Contributing Member
Hey Jim,

For metal buildings & roofs, I clean using my regular house wash mix. If the metal building or roof is really dirty then I will downstream a 50/50 mix. Then rinse it all down.

I have never personally messed with any waxes so can't give you any info about that.

One thing I do if the metal is very hot is presoak it with water to cool it down so my soap mix does not turn to steam as soon as applied.
 

Doug Rucker

UAMCC Board of Directors
Hi Jim, we clean them in small sections at a time, no soap, and rinse, rinse, rinse, and rinse some more. We will use a 20% mix for direct application, or downstream if it's not really bad. When the weather is really hot outside we do them first thing in the morning, or we will even wait until the weather has cooled off. You just don't want your mix drying on the roof. Pre soaking the roof to cool it down like Richard says can also work, but the main thing is keep the roof wet. This is why we work small sections at a time versus applying to large areas like a shingle or tile roof.

I've never applied a wax to a roof. But I can;t stress enough to rinse, rinse, and rinse some more. Not using soap, or using very little soap, helps the rinsing go faster.
 
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